According to Dave Pagnotta of The Fourth Period, the priority for the Toronto Maple Leafs and new GM Brad Treliving is the team's coaching staff. For now, the urgency for negotiations with Matthews just isn't there.
There's no question Matthews will get a raise on his next contract regardless of which team he signs it with. That said, TSN's Mike Johnson recently said he believes Matthews isn't interested in signing an eight year deal with the Leafs, estimating it will be either a three or five year contract.